The book of Enoch, admitted from the Bible talks more about these giants who are the sons of God...Ie alien races that some have equated to. Also, what about Gnosticism? What about Lilith? Speaking of aliens though, if you want an interesting religion you can equate to alien; look into Sumerian. In terms of what gods I myself have an affinity for, mine is Odin. Unlike Jehovah, whom seeks to suppress know; Odin gave his eye to gain knowledge. Also from time to time he's said to come to Earth and teach men, while taking different forms.